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Proceedings Paper

Properties of the phase-change guest-host-mode liquid crystal display
Author(s): Jin-Jei Wu; Tzu-Yang Lee; Shu-Hsia Chen
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Paper Abstract

We study the electrooptical properties of the phase-change- guest-host (PCGH) mode liquid crystal display. The PCGH material is a mixture od dye, chiral dopen, and nematic liquid crystal. The material is spread between two glass substrates which have previously been coated with a thin transparent conducting layer and a homeotropic alignment layer. Samples with various thickness-to-natural pitch ratio d/p0 are fabricated. For each sample, the scroll-to- focal conic texture transition field Ec,c, the cholesteric-nematic phase transition field ECN and the nematic-cholesteric phase transition field ENC are measured. Experimental results show that the value of ECN can fit de Gennes theory well when d/p0 >= 3.7. Then we measure the ON- and OFF-state transmittance and the response time vs. d/p0 for each sample. It is found that for d/p0 >= the d/p0 ratio can hardly affect the transmittances but affect the response time of the sample film.

Paper Details

Date Published: 17 June 1998
PDF: 8 pages
Proc. SPIE 3421, Display Technologies II, (17 June 1998); doi: 10.1117/12.311052
Show Author Affiliations
Jin-Jei Wu, Soochow Univ. (Taiwan)
Tzu-Yang Lee, National Chiao Tung Univ. (Taiwan)
Shu-Hsia Chen, National Chiao Tung Univ. (Taiwan)

Published in SPIE Proceedings Vol. 3421:
Display Technologies II
Fang-Chen Luo; Shin-Tson Wu; Shunsuke Kobayashi, Editor(s)

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